| CPC G01R 1/04 (2013.01) [G01R 1/18 (2013.01); G01R 31/343 (2013.01)] | 14 Claims |
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1. A current sensor assembly comprising:
a housing;
a plurality of shields located in the housing, each shield having an inner space open toward a top of the housing;
a plurality of spaced apart bus bars configured to have three phase current applied thereto located in the housing, each bus bar extending through a corresponding shield of the plurality of shields;
a printed circuit board located in the housing; and
a plurality of current sensors located on the printed circuit board, each current sensor being configured to measure a current applied to a corresponding bus bar of the plurality of bus bars, and each current sensor being spaced from the corresponding bus bar in the inner space of the corresponding shield,
wherein each shield includes:
a base located at an inner side of the housing; and
a pair of protruding sides extending from opposite ends of the base,
wherein each bus bar is located near the base of the corresponding shield and extends between the pair of protruding sides of the corresponding shield,
wherein a center of each current sensor is centrally located between the pair of protruding sides of the corresponding shield,
wherein, for each shield, a first axis is defined in a direction in which the corresponding bus bar extends over the base of the shield, a second axis is defined in a direction extending between the pair of protruding sides of the shields, and a third axis is defined in a direction in which the pair of protruding sides extend from the bases toward the printed circuit board, and
wherein the center of each current sensor is spaced apart from a center line of the corresponding bus bar by a fourth distance along the second axis, and
wherein the center line of the corresponding bus bar is spaced apart from a center between the pair of protruding sides of the corresponding shield by the fourth distance along the second axis.
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